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PercentagesArithmeticMiddle schoolabout 0:23

18 is 30% of what?: animated lesson

A narrated, step-by-step percentages video lesson with captions. Final answer: 60.

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Video with a synthetic English voice and captions. Pick another language for subtitles in that language, or open the interactive version.

Video narrated by a synthetic voice (Piper TTS, en_US-ljspeech-high voice (LJ Speech dataset, public domain)); the steps come from our maths engine and the answer was checked independently. Download MP4 (0.1 MB) · Captions (WebVTT)

Steps on screen

1. The problem
Working with percentages
18 is 30% of what number?
2. Step by step
1. $30\% = 0.3$
  Convert the percent to a decimal
2. $\frac{18}{0.3} = 60$
  Divide the part by the decimal
3. The answer
$60$
18 ÷ 0.3 = 60
4. Check
- Check: 30% of 60 = 18

Transcript

The problem. Here is the problem: 18 is 30 percent of what number? Find the whole when a part and its percentage are known.

Step by step. Convert the percent to a decimal. Divide the part by the decimal.

The answer. So the answer is 60. If 18 is 30 percent of a number, that number is 60.

Check. Check: 30 percent of 60 equals 18.

About percentages

Percent of a number, what percent one number is of another, the whole from a part, and percent change.

18 is 30% of what?: Percentages Step-by-Step Lesson